CN106688274B

CN106688274B - Terminal, mobile management entity, switching center, service processing method and system

Info

Publication number: CN106688274B
Application number: CN201480081822.5A
Authority: CN
Inventors: 张志刚
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2014-11-28
Filing date: 2014-11-28
Publication date: 2020-11-10
Anticipated expiration: 2034-11-28
Also published as: US10390281B2; US20170265118A1; WO2016082187A1; CN106688274A

Abstract

The invention provides a terminal, comprising: a call establishing unit, which is used for performing a voice call establishing process on a first communication network if a call request is received when a data service is performed by using the first communication network; the interaction unit is used for receiving circuit resource information of a second communication network required by the voice service corresponding to the call request; and the processing unit is used for sending an answering response to the mobile management entity if detecting that an answering button of the terminal is selected after the voice call establishment process is finished, disconnecting the data service of the first communication network according to the received voice fall-back information and establishing the voice service of the second communication network by using the received circuit resource information. Correspondingly, a mobile management entity, a mobile switching center, a service processing method and a service processing system are also provided. By the technical scheme, whether the circuit domain fallback is carried out or not can be determined according to whether the user answers the call, so that the data service is not influenced when the user does not answer the call.

Description

Terminal, mobile management entity, switching center, service processing method and system

Technical Field

The present invention relates to the technical field of terminals, and in particular, to a terminal and a mobile management entity, a mobile switching center, a service processing method and a service processing system.

Background

Voice call fallback (CSFB) is a technology used by LTE (Long Term Evolution) to provide a voice service by instructing a terminal to fall back from an LTE network to a 2G or 3G network. The called terminal responds after receiving a call sent by an MME (Mobile Management Entity), the MME cooperates with an MSC (Mobile Switching Center) to guide the terminal to return to the 2/3G network through the eNB, and the terminal completes a voice call setup procedure on the 2/3G network.

In the conventional CSFB scheme, the terminal, upon receiving a telephone call, falls back to the 2/3G network to start the telephone set-up procedure, and receives an OTA (Over-the-Air Technology) message such as SETUP (update). Only through the SETUP message, the called terminal can know the calling party. At this time, even though the terminal does not want to switch on the call, the data service, such as video call, etc., performed on LTE is affected or directly interrupted because the terminal has fallen back to the 2/3G network with smaller bandwidth.

Therefore, a new technical scheme is needed, which can determine whether to perform circuit switched fallback according to whether the user answers the call, so that when the user does not answer the call, the data service is not affected, and the user experience is improved.

Disclosure of Invention

The invention provides a new technical scheme based on the problems, and can determine whether to perform circuit domain fallback according to whether a user answers a call, so that when the user does not answer the call, the data service is not influenced, and the use experience of the user is improved.

In view of this, the present invention provides a terminal, where the terminal includes a first communication module and a second communication module, where a first communication network corresponding to the first communication module only supports a data service, and a second communication network corresponding to the second communication module at least supports a voice service, and the terminal further includes: a call establishing unit, configured to perform a voice call establishing procedure on the first communication network if a call request from a mobility management entity is received when the terminal performs a data service using the first communication network; the interaction unit is used for receiving circuit resource information of a second communication network required by the voice service corresponding to the call request, which is sent by the mobile management entity; and the processing unit is used for sending an answering response to the mobile management entity if detecting that an answering button of the terminal is selected after the voice call establishment process is finished, disconnecting the data service of the first communication network according to the received voice fallback information from the mobile management entity, and establishing the voice service of the second communication network by using the received circuit resource information.

In the technical scheme, when a terminal performs data service on a first communication network only supporting data service, if a call request is received, a voice call establishment process is established on the first communication network, that is, negotiation between the terminal and a mobile switching center is completed on the first communication network, so that incoming call information is displayed on the terminal, and a user can know the call, so that the user can select whether to answer the incoming call, when the user selects an answer key, the data service of the first communication network is closed, and the voice service is established on a second communication network supporting the voice service. Therefore, when the user answers the incoming call, the network is dropped from the first communication network to the second communication network, and when the user does not answer the incoming call, the first communication network is not disconnected, so that when the user does not answer the incoming call, the ongoing data service is not influenced. Meanwhile, the voice service is established directly according to the received circuit resource information, namely the circuit resource is ready, so that the fallback can be completed quickly.

The first communication network can be an LTE network, and the second communication network can be a 2G/3G network, so that when a user of the terminal uses the LTE network to perform data service, if a call request sent by a mobile management entity is received at the moment, a voice call flow is established on the LTE network, the data service of the LTE network is not disconnected, call information can be displayed on the terminal, and the user can determine whether to answer the call. When the user answers, the user falls back to the 2G/3G network from the LTE network, and when the user does not answer, the user does not need to carry out voice fall back, so that when the user does not answer the incoming call, the ongoing data service can not be influenced, and the use experience of the user is improved.

In the above technical solution, preferably, the interaction unit is further configured to: and when the call request is received, sending a call response to the mobility management entity, wherein the call response comprises identification bit information indicating whether the voice call establishment process can be completed on the first communication network, so that the mobility management entity judges whether the voice call establishment process can be completed on the first communication network according to the identification bit information.

In the technical scheme, the call response includes identification bit information whether the voice call establishment procedure can be completed on the first communication network, wherein the identification bit information may be an identification bit.

In the foregoing technical solution, preferably, the call establishing unit includes: an information receiving unit, configured to receive parameter information required for performing a voice call setup procedure, where the parameter information is sent by the mobility management entity when a determination result indicates that the voice call setup procedure is supported to be completed on the first communication network; and the establishing unit is used for performing the voice call establishing process on the first communication network according to the parameter information.

In the technical scheme, when the mobile management entity receives a call response containing identification bit information, namely identification bits, whether the identification bits are supported or not is judged, and when the judgment result is that the identification bits are supported, parameter information required by a voice call establishment process is sent to the terminal. Of course, the circuit resource information of other communication networks needed for supporting the voice service corresponding to the call request is also sent, so as to prepare for the subsequent establishment of the voice service when the user chooses to answer the call.

In the foregoing technical solution, preferably, the parameter information includes system information, location update response information, routing area update response information, and/or SETUP information of a cell in which the second communication network is located.

In this embodiment, the parameter information includes, but is not limited to, one or more of system information, location update response information, routing area update response information, and SETUP information of a cell in which the second communication network is located.

In the above technical solution, preferably, the interaction unit is further configured to: after receiving the system information, sending a location update request and a routing area update request to the mobility management entity, and receiving the location update response information and the routing area update response information sent by the mobility management entity according to the location update request and the routing area update request.

In the technical scheme, if the mobile switching center and the terminal need to complete the location updating and routing area updating processes, the OTA message completing the two processes is also forwarded between the terminal and the mobile switching center after being encapsulated by the mobile management entity.

In the foregoing technical solution, preferably, the voice call setup procedure includes: receiving the SETUP information sent by the mobility management entity, wherein the SETUP information comprises identification information, coding mode information and frequency band resource information of a call request sending terminal; identifying the SETUP information to send SETUP response information to the mobility management entity according to the identification result; and receiving call reminding information sent by the mobile management entity, and carrying out incoming call reminding on a user of the terminal according to the call reminding information and a preset reminding mode.

In the technical scheme, after the mobile management entity sends the SETUP message to the terminal, the terminal identifies the message and starts a voice call establishment process, which specifically comprises the following steps: after the terminal identifies the SETUP message, the terminal sends a call confirmed message (SETUP response message) to the mobile management entity, the mobile management entity forwards the message to the mobile switching center, the mobile switching center sends Alerting information to the mobile management entity, the mobile management entity forwards the message to the terminal, and after the terminal receives the message, the terminal can display the calling party number to the user, and the user determines whether to answer the call.

In the above technical solution, preferably, the interaction unit is further configured to: and receiving voice fallback information sent by the mobile management entity when the judgment result shows that the mobile management entity does not support the completion of the voice call establishment process on the first communication network, and disconnecting the data service of the first communication network according to the voice fallback information so as to perform the voice call establishment process on the second communication network.

In the technical scheme, when the mobile management entity does not support the completion of the voice call establishment process on the first communication network, the first communication network is directly disconnected, and the voice call establishment process is completed on the second communication network, so that the normal establishment of the voice service is ensured.

In the above technical solution, preferably, the interaction unit is further configured to: and when detecting that the rejection key of the terminal is selected, sending a rejection response to the mobile management entity.

In the technical scheme, when the user refuses to answer the call, a refusal response is sent to the mobile management entity, so that the mobile management entity can forward the refusal response to the mobile switching center, and the circuit resource allocated to the voice call is released.

In the above technical solution, preferably, the interaction unit is further configured to: and receiving the voice fallback information sent by the mobile management entity when the system resource is sent, or receiving the voice fallback information sent by the mobile management entity when the answer response is received.

In the technical scheme, the voice fallback message can be sent when the mobile management entity sends the system resource, then the voice fallback is carried out after the voice call establishment procedure is completed, and the voice fallback message can also be sent when the answer response is received after the voice call establishment procedure is completed.

According to another aspect of the present invention, there is also provided a mobility management entity, including: the interactive unit is used for receiving a call request sent by a mobile switching center, sending the call request to a terminal and receiving a call response sent by the terminal according to the call request, wherein the call response comprises identification bit information of whether a voice call establishment process can be completed on a first communication network; a judging unit, for judging whether the mobility management entity supports to complete the voice call establishment procedure on the first communication network according to the identification bit information in the call response; the interaction unit is further configured to: and when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network, sending the call response to the mobile switching center so that the mobile management entity judges whether the mobile management entity supports the completion of the voice call establishment process on the first communication network according to the identification bit information, receives parameter information required by the voice call establishment process and circuit resource information of a second communication network required by the establishment of the voice service corresponding to the call request, which are sent by the mobile switching center when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network, and sends the parameter information to the terminal, receives an answering response sent by the terminal, and sends the answering response to the mobile switching center.

Specifically, when the mobility management entity receives a call response including identification bit information, that is, identification bits, it may be determined whether the identification bits are supported, and when the determination result is that the identification bits are supported, parameter information required by a voice call setup procedure may be sent to the terminal. Of course, the circuit resource information of other communication networks needed for supporting the voice service corresponding to the call request is also sent, so as to prepare for establishing the voice service when the user selects to answer the call.

In the above technical solution, preferably, the interaction unit is further configured to: after receiving the system information sent by the mobile switching center, sending the system information to the terminal, so that the terminal sends a location updating request and a routing area updating request to the mobile management entity according to the system information, receives the location updating request and the routing area updating request, and sends the location updating request and the routing area updating request to the mobile switching center; and receiving location updating response information and routing area updating response information which are sent by the mobile switching center according to the location updating request and the routing area updating request, and sending the location updating response information and the routing area updating response information to the terminal.

In the above technical solution, preferably, the interaction unit is further configured to: receiving SETUP information sent by the mobile switching center, and sending the SETUP information to the terminal; receiving SETUP response information sent by the terminal according to the SETUP information, and sending the SETUP response information to the mobile switching center; receiving call reminding information transmitted by the mobile switching center, and sending the call reminding information to the terminal; and receiving a rejection response sent by the terminal, and sending the rejection response to the mobile switching center.

In the technical scheme, after the mobile management entity sends the SETUP message to the terminal, the terminal identifies the message and starts a voice call establishment process, which specifically comprises the following steps: after the terminal identifies the SETUP message, the terminal sends a call confirmed message (SETUP response message) to the mobile management entity, the mobile management entity forwards the message to the mobile switching center, the mobile switching center sends Alerting information to the mobile management entity, the mobile management entity forwards the message to the terminal, and after the terminal receives the message, the terminal can display the calling party number to the user, and the user determines whether to answer the call. When the user refuses to answer the call, the refusal response is sent to the mobile management entity, so that the mobile management entity can forward the refusal response to the mobile switching center, and the circuit resource allocated to the voice call is released.

In the above technical solution, preferably, the interaction unit is further configured to: and receiving the voice fallback information sent by the mobile switching center when the system resources are sent, and sending the voice fallback information to the terminal, or receiving the voice fallback information sent by the mobile switching center when the answer response is received, and sending the voice fallback information to the terminal.

According to still another aspect of the present invention, there is also provided a mobile switching center including: the interactive unit is used for sending a call request to a mobile management entity and receiving a call response which is sent by the mobile management entity and corresponds to the call request, wherein the call response comprises identification bit information of whether a voice call establishment process can be completed on a first communication network; a judging unit, for judging whether the mobile switching center supports the completion of the voice call establishment procedure on the first communication network according to the identification bit information in the call response; the allocation unit allocates circuit resource information of a second communication network required for establishing a voice service to a target terminal corresponding to the call request when the judgment result indicates that the mobile switching center supports the completion of the voice call establishment process on the first communication network; the interaction unit is further configured to: sending parameter information and the circuit resource information required by the voice call establishment process to the mobile management entity, receiving answering response sent by the mobile management entity, and sending a voice fallback message to the mobile management entity, so that the mobile management entity sends the voice fallback message to the target terminal, the target terminal disconnects the data service of the first communication network according to the voice fallback message, and establishes the voice service of the second communication network by using the received circuit resource information.

Specifically, when the mobile switching center receives a call response including identification bit information, that is, identification bits, it may be determined whether the identification bits are supported, and when the determination result is that the identification bits are supported, parameter information required by a voice call setup procedure may be sent to the terminal. Of course, the circuit resource information of other communication networks needed for supporting the voice service corresponding to the call request is also sent, so as to prepare for the subsequent establishment of the voice service when the user chooses to answer the call.

In the above technical solution, preferably, the interaction unit is further configured to: sending the system information to the mobility management entity; receiving a location updating request and a routing area updating request sent by the mobile management entity, and receiving the location updating request and the routing area updating request; and sending position updating response information and routing area updating response information to the mobile management entity according to the position updating request and the routing area updating request.

In the above technical solution, preferably, the interaction unit is further configured to: sending a SETUP message to the mobility management entity, receiving a SETUP response message sent by the mobility management entity, and sending a call reminding message to the mobility management entity according to the SETUP response message; and receiving a rejection response sent by the mobile management entity, and releasing the allocated circuit resource information according to the rejection response.

In the technical scheme, a mobile switching center sends a SETUP message to a mobile management entity, the mobile management entity sends the SETUP message to a terminal, and then the terminal identifies the messages and starts a voice call establishment process, which specifically comprises the following steps: after the terminal identifies the SETUP message, the terminal sends a call confirmed message (SETUP response message) to the mobile management entity, the mobile management entity forwards the message to the mobile switching center, the mobile switching center sends Alerting information to the mobile management entity, the mobile management entity forwards the message to the terminal, and after the terminal receives the message, the terminal can display the calling party number to the user, and the user determines whether to answer the call. When the user refuses to answer the call, the refusal response is sent to the mobile management entity, so that the mobile management entity can forward the refusal response to the mobile switching center, and the circuit resource allocated to the voice call is released.

In the above technical solution, preferably, the interaction unit is further configured to: and sending the voice fallback information to the mobile management entity when the system resource is sent, or sending the voice fallback information to the mobile management entity when the answer response is received.

In the technical scheme, the voice fallback message can be sent when the mobile switching center sends the system resources, then voice fallback is carried out after the voice call establishment process is completed, and voice fallback information can also be sent when an answer response is received after the voice call establishment process is completed.

According to still another aspect of the present invention, there is also provided a service processing system, including: the terminal according to any one of the above technical solutions; the mobility management entity according to any of the above embodiments; and a mobile switching center according to any of the above technical solutions.

According to another aspect of the present invention, there is provided a service processing method for a terminal, where the terminal includes a first communication network and a second communication network, where the first communication network only supports data services, and the second communication network at least supports voice services, the method including: when the terminal uses the first communication network to carry out data service, if a call request from a mobile management entity is received, a voice call establishment process is carried out on the first communication network; receiving circuit resource information of a second communication network required by the voice service corresponding to the call request sent by the mobile management entity; after the voice call establishment process is completed, if the answer button of the terminal is detected to be selected, sending an answer response to the mobile management entity, disconnecting the data service of the first communication network according to the received voice fall-back information from the mobile management entity, and establishing the voice service of the second communication network by using the received circuit resource information.

In the foregoing technical solution, preferably, the call response includes identification bit information indicating whether the voice call establishment procedure can be completed on the first communication network, so that the mobility management entity determines whether the voice call establishment procedure can be completed on the first communication network according to the identification bit information.

In the technical scheme, the call response includes identification information of whether the voice call establishment procedure can be completed on the first communication network, wherein the identification bit information may be an identification bit.

In the foregoing technical solution, preferably, the performing a voice call setup procedure on the first communication network specifically includes: receiving parameter information which is sent by the mobile management entity and is required for carrying out a voice call establishment process when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network; and carrying out the voice call establishment process on the first communication network according to the parameter information.

In the technical scheme, when the mobile management entity receives a call response containing identification bit information, namely identification bits, whether the identification bits are supported or not is judged, and when the judgment result is that the identification bits are supported, parameter information required by a voice call establishment process is sent to the terminal. Of course, the circuit resource information of other communication networks needed for supporting the voice service corresponding to the call request is also sent, so as to prepare for establishing the voice service when the user selects to answer the call.

In the above technical solution, preferably, the method further includes: after receiving the system information, sending a location update request and a routing area update request to the mobility management entity, and receiving the location update response information and the routing area update response information sent by the mobility management entity according to the location update request and the routing area update request.

In the technical scheme, after the mobile management entity sends the SETUP message to the terminal, the terminal identifies the message and starts a voice call establishment process, which specifically comprises the following steps: after the terminal identifies the SETUP message, the terminal sends a call confirmed message (SETUP response message) to the mobile management entity, the mobile management entity forwards the message to the mobile switching center, the mobile switching center sends Alerting information to the mobile management entity, the mobile management entity forwards the message to the terminal, and after the terminal receives the message, the terminal can display the calling party number to the user, and the user determines whether to answer the call. The method comprises the following steps of carrying out incoming call reminding on a user according to a preset reminding mode, namely a reminding mode preset by the user, such as ring reminding or vibration reminding.

In the above technical solution, preferably, the method further includes: and receiving voice fallback information sent by the mobile management entity when the judgment result shows that the mobile management entity does not support the completion of the voice call establishment process on the first communication network, and disconnecting the data service of the first communication network according to the voice fallback information so as to perform the voice call establishment process on the second communication network.

In the above technical solution, preferably, the method further includes: and when detecting that the rejection key of the terminal is selected, sending a rejection response to the mobile management entity.

In the above technical solution, preferably, the method further includes: and receiving the voice fallback information sent by the mobile management entity when the system resource is sent, or receiving the voice fallback information sent by the mobile management entity when the answer response is received.

According to another aspect of the present invention, there is provided a service processing method for a mobility management entity, including: receiving a call request sent by a mobile switching center, sending the call request to a terminal, and receiving a call response sent by the terminal according to the call request, wherein the call response comprises identification information of whether a voice call establishment process can be completed on a first communication network; judging whether the mobile management entity supports the completion of the voice call establishment process on the first communication network or not according to the identification information in the call response; and when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network, sending the call response to the mobile switching center so that the mobile management entity judges whether the mobile management entity supports the completion of the voice call establishment process on the first communication network according to the identification information, receives parameter information required for the voice call establishment process and circuit resource information of a second communication network required for establishing a voice service corresponding to the call request, which are sent by the mobile switching center when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network, and sends the parameter information to the terminal, receives an answering response sent by the terminal, and sends the answering response to the mobile switching center.

Specifically, when the mobility management entity receives a call response including identification bit information, that is, identification bits, it may be determined whether the identification bits are supported, and when the determination result is that the identification bits are supported, parameter information required by a voice call setup procedure may be sent to the terminal. Of course, the circuit resource information of other communication networks needed for supporting the voice service corresponding to the call request is also sent, so as to prepare for the subsequent establishment of the voice service when the user chooses to answer the call.

In the foregoing technical solution, preferably, the parameter information includes system information, location update response information, routing area update response information, and/or SETUP information of a cell where a voice service corresponding to the voice call SETUP procedure needs to be dropped back to the second communication network.

In the above technical solution, preferably, the method further includes: after receiving the system information sent by the mobile switching center, sending the system information to the terminal, so that the terminal sends a location updating request and a routing area updating request to the mobile management entity according to the system information, receives the location updating request and the routing area updating request, and sends the location updating request and the routing area updating request to the mobile switching center; and receiving location updating response information and routing area updating response information which are sent by the mobile switching center according to the location updating request and the routing area updating request, and sending the location updating response information and the routing area updating response information to the terminal.

In the above technical solution, preferably, the method further includes: and receiving a rejection response sent by the terminal, and sending the rejection response to the mobile switching center.

In the above technical solution, preferably, the method further includes: and receiving the voice fallback information sent by the mobile switching center when the system resources are sent, and sending the voice fallback information to the terminal, or receiving the voice fallback information sent by the mobile switching center when the answer response is received, and sending the voice fallback information to the terminal.

According to another aspect of the present invention, there is provided a service processing method for a mobile switching center, including: sending a call request to a mobile management entity, and receiving a call response corresponding to the call request sent by the mobile management entity, wherein the call response comprises identification information of whether a voice call establishment procedure can be completed on a first communication network; judging whether the mobile switching center supports the completion of the voice call establishment process on the first communication network or not according to the identification information in the call response; when the judgment result is that the mobile switching center supports the completion of the voice call establishment process on the first communication network, circuit resource information of a second communication network required for establishing a voice service is distributed to a target terminal corresponding to the call request; sending parameter information and the circuit resource information required by the voice call establishment process to the mobile management entity, receiving answering response sent by the mobile management entity, and sending a voice fallback message to the mobile management entity, so that the mobile management entity sends the voice fallback message to the target terminal, the target terminal disconnects the data service of the first communication network according to the voice fallback message, and establishes the voice service of the second communication network by using the received circuit resource information.

Specifically, when receiving a call response including identification information, i.e., an identification bit, the mobile switching center determines whether the identification bit is supported, and when the determination result is that the identification bit is supported, the mobile switching center sends parameter information required by a voice call setup procedure to the terminal. Of course, the circuit resource information of other communication networks needed for supporting the voice service corresponding to the call request is also sent, so as to prepare for the subsequent establishment of the voice service when the user chooses to answer the call.

In the above technical solution, preferably, the method further includes: sending the system information to the mobility management entity; receiving a location updating request and a routing area updating request sent by the mobile management entity, and receiving the location updating request and the routing area updating request; and sending position updating response information and routing area updating response information to the mobile management entity according to the position updating request and the routing area updating request.

In the above technical solution, preferably, the method further includes: sending a SETUP message to the mobility management entity, receiving a SETUP response message sent by the mobility management entity, and sending a call reminding message to the mobility management entity according to the SETUP response message; and receiving a rejection response sent by the mobile management entity, and releasing the allocated circuit resource information according to the rejection response.

In the above technical solution, preferably, the method further includes: and sending the voice fallback information to the mobile management entity when the system resource is sent, or sending the voice fallback information to the mobile management entity when the answer response is received.

Through the technical scheme, the tunnel of the OTA message of the 2/3G network is provided through the LTE network, so that the terminal completes the establishment process of the voice call on the LTE network, acquires the number of the calling party and determines whether to answer the call. Under the condition of no answering, the data service on the LTE is not influenced; if the user answers, the user can make certain operation and safely quit the LTE data service.

Drawings

Fig. 1 shows a block diagram of a terminal according to an embodiment of the invention;

fig. 2 shows a block diagram of a mobility management entity according to an embodiment of the invention;

FIG. 3 shows a block diagram of a mobile switching center according to an embodiment of the invention;

FIG. 4 shows a block diagram of a business processing system in accordance with an embodiment of the invention;

FIG. 5 shows a flow diagram of a traffic handling method according to one embodiment of the invention;

FIG. 6 shows a flow diagram of a traffic handling method according to another embodiment of the invention;

FIG. 7 shows a flow diagram of a traffic handling method according to yet another embodiment of the invention;

FIG. 8 shows a detailed flow diagram of a traffic handling method according to an embodiment of the invention;

fig. 9 shows a detailed flowchart of a service processing method according to another embodiment of the present invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Fig. 1 shows a block diagram of a terminal according to an embodiment of the invention.

As shown in fig. 1, the present invention provides a terminal 100, which includes a first communication network and a second communication network, wherein the first communication network only supports data services, and the second communication network at least supports voice services, and further includes: a call establishing unit 102, configured to perform a voice call establishing procedure on the first communication network if a call request from a mobility management entity is received when the terminal performs a data service using the first communication network; an interaction unit 104, configured to receive circuit resource information of a second communication network, which is sent by the mobility management entity and is required for establishing a voice service corresponding to the call request; and the processing unit 106, after the voice call establishment process is completed, if it is detected that the answer button of the terminal is selected, sends an answer response to the mobility management entity, disconnects the data service of the first communication network according to the received voice fallback information from the mobility management entity, and establishes the voice service of the second communication network by using the received circuit resource information.

In the above technical solution, preferably, the interaction unit 104 is further configured to: and when the call request is received, sending a call response to the mobility management entity, wherein the call response comprises identification bit information indicating whether the voice call establishment process can be completed on the first communication network, so that the mobility management entity judges whether the voice call establishment process can be completed on the first communication network according to the identification bit information.

In the foregoing technical solution, preferably, the call setup unit 102 includes: an information receiving unit 1022, configured to receive parameter information, which is sent by the mobility management entity when the determination result indicates that the voice call establishment procedure is supported to be completed on the first communication network, and is required for performing the voice call establishment procedure; a procedure establishing unit 1024, configured to perform the voice call establishment procedure on the first communication network according to the parameter information.

In the above technical solution, preferably, the interaction unit 104 is further configured to: after receiving the system information, sending a location update request and a routing area update request to the mobility management entity, and receiving the location update response information and the routing area update response information sent by the mobility management entity according to the location update request and the routing area update request.

In the above technical solution, preferably, the interaction unit 104 is further configured to: and receiving voice fallback information sent by the mobile management entity when the judgment result shows that the mobile management entity does not support the completion of the voice call establishment process on the first communication network, and disconnecting the data service of the first communication network according to the voice fallback information so as to perform the voice call establishment process on the second communication network.

In the above technical solution, preferably, the interaction unit 104 is further configured to: and when detecting that the rejection key of the terminal is selected, sending a rejection response to the mobile management entity.

In the above technical solution, preferably, the interaction unit 104 is further configured to: and receiving the voice fallback information sent by the mobile management entity when the system resource is sent, or receiving the voice fallback information sent by the mobile management entity when the answer response is received.

Fig. 2 shows a block diagram of a mobility management entity according to an embodiment of the invention.

As shown in fig. 2, a mobility management entity 200 according to an embodiment of the present invention includes: the interactive unit 202 receives a call request sent by a mobile switching center, sends the call request to a terminal, and receives a call response sent by the terminal according to the call request, wherein the call response includes identification information indicating whether a voice call establishment procedure can be completed on a first communication network; a determining unit 204, configured to determine, according to the identifier information in the call response, whether the mobility management entity supports completing the voice call establishment procedure on the first communication network; the interaction unit 202 is further configured to: and when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network, sending the call response to the mobile switching center so that the mobile management entity judges whether the mobile management entity supports the completion of the voice call establishment process on the first communication network according to the identification information, receives parameter information required for the voice call establishment process and circuit resource information of a second communication network required for establishing a voice service corresponding to the call request, which are sent by the mobile switching center when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network, and sends the parameter information to the terminal, receives an answering response sent by the terminal, and sends the answering response to the mobile switching center.

In the above technical solution, preferably, the interaction unit 202 is further configured to: after receiving the system information sent by the mobile switching center, sending the system information to the terminal, so that the terminal sends a location updating request and a routing area updating request to the mobile management entity according to the system information, receives the location updating request and the routing area updating request, and sends the location updating request and the routing area updating request to the mobile switching center; and receiving location updating response information and routing area updating response information which are sent by the mobile switching center according to the location updating request and the routing area updating request, and sending the location updating response information and the routing area updating response information to the terminal.

In the above technical solution, preferably, the interaction unit 202 is further configured to: receiving SETUP information sent by the mobile switching center, and sending the SETUP information to the terminal; receiving SETUP response information sent by the terminal according to the SETUP information, and sending the SETUP response information to the mobile switching center; receiving call reminding information transmitted by the mobile switching center, and sending the call reminding information to the terminal; and receiving a rejection response sent by the terminal, and sending the rejection response to the mobile switching center.

In the above technical solution, preferably, the interaction unit 202 is further configured to: and receiving the voice fallback information sent by the mobile switching center when the system resources are sent, and sending the voice fallback information to the terminal, or receiving the voice fallback information sent by the mobile switching center when the answer response is received, and sending the voice fallback information to the terminal.

Fig. 3 shows a block diagram of a mobile switching center according to an embodiment of the invention.

As shown in fig. 3, according to still another aspect of the present invention, there is also provided a mobile switching center 300, including: an interaction unit 302, configured to send a call request to a mobility management entity, and receive a call response corresponding to the call request sent by the mobility management entity, where the call response includes identification information indicating whether a voice call setup procedure can be completed on a first communication network; a determining unit 304, configured to determine whether the mobile switching center supports completing the voice call establishment procedure on the first communication network according to the identification information in the call response; an allocating unit 306, configured to allocate, when the determination result indicates that the mobile switching center supports that the voice call establishment procedure is completed on the first communication network, circuit resource information of a second communication network required for establishing a voice service to a target terminal corresponding to the call request; the interaction unit 302 is further configured to: sending parameter information and the circuit resource information required by the voice call establishment process to the mobile management entity, receiving answering response sent by the mobile management entity, and sending a voice fallback message to the mobile management entity, so that the mobile management entity sends the voice fallback message to the target terminal, the target terminal disconnects the data service of the first communication network according to the voice fallback message, and establishes the voice service of the second communication network by using the received circuit resource information.

In the above technical solution, preferably, the interaction unit 302 is further configured to: sending the system information to the mobility management entity; receiving a location updating request and a routing area updating request sent by the mobile management entity, and receiving the location updating request and the routing area updating request; and sending position updating response information and routing area updating response information to the mobile management entity according to the position updating request and the routing area updating request.

In the above technical solution, preferably, the interaction unit 302 is further configured to: sending a SETUP message to the mobility management entity, receiving a SETUP response message sent by the mobility management entity, and sending a call reminding message to the mobility management entity according to the SETUP response message; and receiving a rejection response sent by the mobile management entity, and releasing the allocated circuit resource information according to the rejection response.

In the above technical solution, preferably, the interaction unit 302 is further configured to: and sending the voice fallback information to the mobile management entity when the system resource is sent, or sending the voice fallback information to the mobile management entity when the answer response is received.

FIG. 4 shows a block diagram of a business processing system in accordance with an embodiment of the invention.

As shown in fig. 4, a service processing system 400 according to an embodiment of the present invention includes: the terminal 100 according to any of the above embodiments; the mobility management entity 200 according to any of the above embodiments; and a mobile switching center 300 according to any of the above embodiments.

Fig. 5 shows a flow diagram of a traffic processing method according to an embodiment of the invention.

As shown in fig. 5, a service processing method according to an embodiment of the present invention is applied to a terminal, where the terminal includes a first communication network and a second communication network, where the first communication network only supports data services, and the second communication network at least supports voice services, and includes: step 502, when the terminal uses the first communication network to perform data service, if a call request from a mobile management entity is received, a voice call establishment procedure is performed on the first communication network; step 504, receiving circuit resource information of a second communication network required for establishing a voice service corresponding to the call request, which is sent by the mobility management entity; step 506, after the voice call establishment process is completed, if it is detected that an answer button of the terminal is selected, sending an answer response to the mobility management entity, disconnecting the data service of the first communication network according to the received voice fallback information from the mobility management entity, and establishing the voice service of the second communication network by using the received circuit resource information.

In the technical scheme, when the mobile management entity receives a call response containing identification bit information, namely identification bit, whether the identification bit is supported or not is judged, and when the judgment result is that the identification bit is supported, parameter information required by a voice call establishment process is sent to the terminal. Of course, the circuit resource information of other communication networks needed for supporting the voice service corresponding to the call request is also sent, so as to prepare for the subsequent establishment of the voice service when the user chooses to answer the call.

Fig. 6 shows a flow chart of a traffic processing method according to another embodiment of the invention.

As shown in fig. 6, the service processing method according to the embodiment of the present invention is applied to a mobility management entity, and includes: step 602, receiving a call request sent by a mobile switching center, sending the call request to a terminal, and receiving a call response sent by the terminal according to the call request, wherein the call response includes identification information indicating whether a voice call establishment procedure can be completed on a first communication network; step 604, determining whether the mobility management entity supports completing the voice call establishment procedure on the first communication network according to the identification information in the call response; step 606, when the determination result is that the mobility management entity supports the completion of the voice call establishment procedure on the first communication network, sending the call response to the mobile switching center, so that the mobility management entity determines whether the completion of the voice call establishment procedure on the first communication network is supported according to the identification information; and step 608, receiving parameter information required for performing the voice call establishment procedure and circuit resource information of the second communication network required for establishing the voice service corresponding to the call request, which are sent by the mobile switching center when the determination result is that the mobile switching center supports completion of the voice call establishment procedure on the first communication network, and sending the parameter information to the terminal, receiving an answer response sent by the terminal, and sending the answer response to the mobile switching center.

Fig. 7 shows a flowchart of a traffic processing method according to still another embodiment of the present invention.

As shown in fig. 7, a service processing method according to an embodiment of the present invention is applied to a mobile switching center, and includes: step 702, sending a call request to a mobility management entity, and receiving a call response corresponding to the call request sent by the mobility management entity, where the call response includes identification information of whether a voice call setup procedure can be completed on a first communication network; step 704, determining whether the mobile switching center supports completing the voice call establishment procedure on the first communication network according to the identification information in the call response; step 706, when the determination result indicates that the mobile switching center supports the completion of the voice call establishment procedure on the first communication network, allocating circuit resource information of a second communication network required for establishing a voice service to a target terminal corresponding to the call request; step 708, sending parameter information and the circuit resource information required for the voice call establishment procedure to the mobility management entity, receiving an answer response sent by the mobility management entity, and sending a voice fallback message to the mobility management entity, so that the mobility management entity sends the voice fallback message to the target terminal, so that the target terminal disconnects the data service of the first communication network according to the voice fallback message, and establishes the voice service of the second communication network using the received circuit resource information.

Fig. 8 shows a specific flowchart of a service processing method according to an embodiment of the present invention.

As shown in fig. 8, a specific flow of the service processing method according to the embodiment of the present invention is as follows:

step 802, the terminal returns a call response with an identification bit. After monitoring a distress Request (Paging Request) sent by a Mobile Management Entity (MME) on LTE, a terminal uses an identification bit in a call response (Extended Service Request) returned to the mobile management entity to indicate whether a voice call establishment process can be completed on LTE.

Step 804, allocating circuit resources. If the mobility management entity supports this flag, the mobile switching center MSC of the 2/3G network is selected to allocate circuit resources while the mobile switching center of the 2/3G network is notified to forward the voice fall back message, the OTA message of the voice call, and the necessary system messages to the mobility management entity. If the mobile management entity does not support the identification bit, the terminal is directly guided to fall back to the 2/3G network according to the original CSFB mode.

The mobile switching center forwards the system message and the OTA message to the mobility management entity, step 806. The mobile switching center forwards the system information of the cell where the 2G or 3G network is located to the terminal through the mobile management entity,

step 808, perform location update and routing area update. If Location Update and Routing Area Update flows need to be completed between the mobile switching center MSC and the terminal, the OTA message needed to complete the two flows is also encapsulated by the mobile management entity and forwarded between the terminal and the mobile switching center. Wherein during this process the 2/3G network needs to inform the NB or BSC to allocate and maintain the necessary circuit resources even if not used by the terminal.

In step 810, the mobile switching center MSC interacts with the terminal for OTA messaging for voice telephony. The method specifically comprises the following steps: the mobile management entity encapsulates the Setup message and sends the encapsulated Setup message to the called terminal, and the called terminal recognizes the message and starts a voice call establishment process. In the phone setup process, including the previous steps 806 and 808, the terminal always resides on the LTE network and does not need to switch to the 2G or 3G network. After identifying the Setup message, the terminal sends the Call Confirmed message to the mobile management entity, and the mobile management entity forwards the Call Confirmed message to the mobile switching center. And similarly, the mobile switching center sends Alerting to the mobile management entity, and the Alerting is forwarded to the terminal after being encapsulated.

In step 812, the user answers the call and the mobile switching center directs the terminal to perform a voice fall back. After receiving the SETUP message, the terminal can display the calling party number to the user, and the user decides whether to answer the call accordingly. If the user decides to answer, the terminal sends the answer request to the mobile management entity, and the mobile management entity forwards the answer request to the mobile switching center. After receiving the answering request, the mobile switching center sends an answering response to the mobile management entity, and the mobile management entity forwards the answering response to the terminal. The notification terminal may drop back according to the previously received voice drop-back information, and the terminal drops back to the 2G or 3G network to start the voice call according to the voice drop-back information received in step 804. Since the circuit resources of the 2/3G network are already ready, the fallback will be completed quickly.

Step 814, if the user refuses to answer, the terminal sends the refused call request to the mobile management entity, the mobile management entity forwards the refused call request to the mobile switching center, and the mobile switching center releases the circuit resource.

As shown in fig. 9, a specific flow of a service processing method according to another embodiment of the present invention is as follows:

in step 902, the terminal returns a call response with an identification bit. After monitoring a distress Request (Paging Request) sent by a Mobile Management Entity (MME) on LTE, a terminal uses an identification bit in a call response (Extended Service Request) returned to the mobile management entity to indicate whether a voice call establishment process can be completed on LTE.

Step 904, circuit resources are allocated. If the mobility management entity supports this identity, the mobile switching center MSC of the 2/3G network is selected to allocate circuit resources while the mobile switching center of the 2/3G network is notified to forward OTA messages for the voice call and necessary system messages to the mobility management entity. If the mobile management entity does not support the identification bit, the terminal is directly guided to fall back to the 2/3G network according to the original CSFB mode.

The mobile switching center forwards the system message and the OTA message to the mobility management entity, step 906. The mobile switching center forwards the system information of the cell where the 2G or 3G network is located to the terminal through the mobile management entity,

step 908, perform location update and routing area update. If Location Update and Routing Area Update flows need to be completed between the mobile switching center MSC and the terminal, the OTA message needed to complete the two flows is also encapsulated by the mobile management entity and forwarded between the terminal and the mobile switching center. Wherein during this process the 2/3G network needs to inform the NB or BSC to allocate and maintain the necessary circuit resources even if not used by the terminal.

In step 910, the mobile switching center MSC interacts with the terminal for OTA messaging of the voice call. The method specifically comprises the following steps: the mobile management entity encapsulates the Setup message and sends the encapsulated Setup message to the called terminal, and the called terminal recognizes the message and starts a voice call establishment process. In the phone setup process, including the previous steps 806 and 808, the terminal always resides on the LTE network and does not need to switch to the 2G or 3G network. After identifying the Setup message, the terminal sends the Call Confirmed message to the mobile management entity, and the mobile management entity forwards the Call Confirmed message to the mobile switching center. And similarly, the mobile switching center sends Alerting to the mobile management entity, and the Alerting is forwarded to the terminal after being encapsulated.

In step 912, the user answers the call and the mobile switching center directs the terminal to perform a voice fallback. After receiving the SETUP message, the terminal can display the calling party number to the user, and the user decides whether to answer the call accordingly. If the user decides to answer, the terminal sends the answer request to the mobile management entity, and the mobile management entity forwards the answer request to the mobile switching center. After receiving the answering request, the mobile switching center encapsulates the 2/3G base station information (frequency band and frequency) to be dropped into the voice dropping message and sends the voice dropping message to the terminal through the mobile management entity, and the terminal drops the message to the 2G or 3G network to start voice communication. Since the circuit resources of the 2/3G network are already ready, the fallback will be completed quickly.

In step 914, if the user refuses to answer, the terminal sends the refused telephone request to the mobile management entity, the mobile management entity forwards the refused telephone request to the mobile switching center, and the mobile switching center releases the circuit resource.

The technical scheme of the present invention is described in detail above with reference to the accompanying drawings, and through the technical scheme of the present invention, a tunnel of an OTA message of 2/3G network is provided through an LTE network, so that a terminal completes a voice call establishment procedure on the LTE network, obtains a number of a calling party, and determines whether to answer the call. Under the condition of no answering, the data service on the LTE is not influenced; if the user answers, the user can make certain operation and safely quit the LTE data service.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A terminal, the terminal comprising a first communication network communication module and a second communication network communication module, wherein the first communication network corresponding to the first communication module only supports data services, and the second communication network corresponding to the second communication module at least supports voice services, the terminal comprising:

a call establishing unit, configured to perform a voice call establishing procedure on the first communication network if a call request from a mobility management entity is received when the terminal performs a data service using the first communication network;

an interaction unit, configured to send a call response to the mobility management entity when receiving the call request, where the call response includes identification information indicating whether a voice call establishment procedure can be completed on the first communication network, so that the mobility management entity determines, according to the identification information, whether the voice call establishment procedure can be completed on the first communication network, and receives circuit resource information of a second communication network, which is sent by the mobility management entity and is required for establishing a voice service corresponding to the call request;

a processing unit, configured to send an answer response to the mobility management entity if it is detected that an answer button of the terminal is selected after the voice call setup procedure is completed, disconnect a data service of the first communication network according to received voice fallback information from the mobility management entity, and establish a voice service of the second communication network using the received circuit resource information; wherein

The call establishment unit includes:

an information receiving unit, configured to receive parameter information required for performing a voice call setup procedure, where the parameter information is sent by the mobility management entity when a determination result indicates that the voice call setup procedure is supported to be completed on the first communication network;

and the flow establishing unit is used for performing the voice call establishing flow on the first communication network according to the parameter information.

2. The terminal of claim 1, wherein the parameter information comprises system information, location update response information, routing area update response information and/or SETUP information of a cell in which the second communication network is located,

the interaction unit is further configured to:

after receiving the system information, sending a location update request and a routing area update request to the mobility management entity, an

And receiving the location updating response information and the routing area updating response information which are sent by the mobile management entity according to the location updating request and the routing area updating request.

3. The terminal of claim 2, wherein the voice call setup procedure comprises:

receiving the SETUP information sent by the mobility management entity, wherein the SETUP information comprises identification information, coding mode information and frequency band resource information of a call request sending terminal;

identifying the SETUP information to send SETUP response information to the mobility management entity according to the identification result; and

and receiving call reminding information sent by the mobile management entity, and carrying out incoming call reminding on a user of the terminal according to the call reminding information and a preset reminding mode.

4. The terminal of claim 1, wherein the interaction unit is further configured to:

and receiving voice fallback information sent by the mobile management entity when the judgment result shows that the mobile management entity does not support the completion of the voice call establishment process on the first communication network, and disconnecting the data service of the first communication network according to the voice fallback information so as to perform the voice call establishment process on the second communication network.

5. The terminal of claim 1, wherein the interaction unit is further configured to:

and receiving the voice fallback information sent by the mobile management entity when sending the system resource, or receiving the voice fallback information sent by the mobile management entity when receiving the answer response.

6. A mobility management entity, comprising:

an interaction unit receiving a call request transmitted from a mobile switching center and transmitting the call request to a terminal, an

Receiving a call response sent by the terminal according to the call request, wherein the call response comprises identification information of whether a voice call establishment process can be completed on a first communication network;

a judging unit, configured to judge whether the mobility management entity supports completing the voice call establishment procedure on the first communication network according to the identifier information in the call response;

the interaction unit is further configured to:

when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network, the call response is sent to the mobile switching center so that the mobile switching center judges whether the completion of the voice call establishment process on the first communication network is supported or not according to the identification information, and

receiving parameter information required for performing a voice call setup procedure and circuit resource information of a second communication network required for establishing a voice service corresponding to the call request, which are sent by the mobile switching center when the judgment result is that the mobile switching center supports the completion of the voice call setup procedure on the first communication network, and sending the parameter information to the terminal,

receiving the answering response sent by the terminal and sending the answering response to the mobile switching center,

and receiving the voice fallback information sent by the mobile switching center and sending the voice fallback information to the terminal.

7. The MME of claim 6, wherein the parameter information includes system information, location update response information, routing area update response information and/or SETUP information of a cell in which a second communication network is located, to which a voice service corresponding to a voice call SETUP procedure needs to be dropped,

the interaction unit is further configured to:

after receiving the system information sent by the mobile switching center, sending the system information to the terminal, so that the terminal sends a position updating request and a routing area updating request to the mobile management entity according to the system information, and

receiving the position updating request and the routing area updating request, and sending the position updating request and the routing area updating request to a mobile switching center;

and receiving location updating response information and routing area updating response information which are sent by the mobile switching center according to the location updating request and the routing area updating request, and sending the location updating response information and the routing area updating response information to the terminal.

8. The mobility management entity according to claim 7, wherein the interaction unit is further configured to:

receiving SETUP information sent by the mobile switching center, and sending the SETUP information to the terminal;

receiving SETUP response information sent by the terminal according to the SETUP information, and sending the SETUP response information to the mobile switching center;

receiving call reminding information transmitted by the mobile switching center, and sending the call reminding information to the terminal; and

and receiving a rejection response sent by the terminal, and sending the rejection response to the mobile switching center.

9. The mobility management entity according to any of claims 6 to 8, wherein the interaction unit is further configured to:

and receiving voice fallback information sent by the mobile switching center when the mobile switching center sends the system resources, and sending the voice fallback information to the terminal, or receiving the voice fallback information sent by the mobile switching center when the mobile switching center receives the answer response, and sending the voice fallback information to the terminal.

10. A mobile switching center, comprising:

the interactive unit is used for sending a call request to a mobile management entity and receiving a call response which is sent by the mobile management entity and corresponds to the call request, wherein the call response comprises identification information of whether a voice call establishment process can be completed on a first communication network;

a judging unit, for judging whether the mobile switching center supports the completion of the voice call establishment procedure on the first communication network according to the identification information in the call response;

the allocation unit allocates circuit resource information of a second communication network required for establishing a voice service to a target terminal corresponding to the call request when the judgment result indicates that the mobile switching center supports the completion of the voice call establishment process on the first communication network;

the interaction unit is further configured to:

sending parameter information and the circuit resource information required for the voice call setup procedure to the mobility management entity, and

receiving an answering response sent by the mobile management entity, and sending voice fallback information to the mobile management entity, so that the mobile management entity sends the voice fallback information to the target terminal, the target terminal disconnects the data service of the first communication network according to the voice fallback information, and establishes the voice service of the second communication network by using the received circuit resource information.

11. The mobile switching center of claim 10,

the parameter information includes system information, location update response information, routing area update response information and/or SETUP information of a cell where a voice service corresponding to a voice call SETUP procedure needs to be dropped back to a second communication network,

the interaction unit is further configured to:

sending the system information to the mobility management entity;

receiving a location updating request and a routing area updating request sent by the mobile management entity;

and sending position updating response information and routing area updating response information to the mobile management entity according to the position updating request and the routing area updating request.

12. The mobile switching center according to claim 10 or 11, wherein the interaction unit is further configured to:

sending a SETUP message to the mobility management entity, receiving a SETUP response message sent by the mobility management entity, and sending a call reminding message to the mobility management entity according to the SETUP response message; and

and receiving a rejection response sent by the mobile management entity, and releasing the allocated circuit resource information according to the rejection response.

13. The mobile switching center according to claim 10 or 11, wherein the interaction unit is further configured to:

and sending the voice fallback information to the mobile management entity when sending system resources, or sending the voice fallback information to the mobile management entity when receiving the answer response.

14. A transaction system, comprising:

the terminal of any one of claims 1 to 5;

the mobility management entity of any of claims 6 to 9; and

the mobile switching center of any of claims 10 to 13.

15. A service processing method, for a terminal including a first communication module and a second communication module, where a first communication network corresponding to the first communication module only supports data services, and a second communication network corresponding to the second communication module at least supports voice services, includes:

when the terminal uses the first communication network to carry out data service, if a call request from a mobile management entity is received, sending a call response to the mobile management entity, wherein the call response comprises identification information of whether a voice call establishment process can be completed on the first communication network, so that the mobile management entity can judge whether the voice call establishment process can be completed on the first communication network according to the identification information;

performing a voice call setup procedure over the first communication network;

receiving circuit resource information of a second communication network required by the voice service corresponding to the call request sent by the mobile management entity;

after the voice call establishment process is completed, if the answer button of the terminal is detected to be selected, sending an answer response to the mobile management entity, disconnecting the data service of the first communication network according to the received voice fall-back information from the mobile management entity, and establishing the voice service of the second communication network by using the received circuit resource information; wherein

The performing a voice call setup procedure on the first communication network specifically includes:

receiving parameter information which is sent by the mobile management entity and is required for carrying out a voice call establishment process when the judgment result is that the mobile management entity supports the completion of the voice call establishment process on the first communication network;

and carrying out the voice call establishment process on the first communication network according to the parameter information.

16. The traffic processing method according to claim 15, wherein the parameter information comprises system information, location update response information, routing area update response information and/or SETUP information of a cell in which the second communication network is located,

the method further comprises:

17. The traffic processing method according to claim 16, wherein the voice call setup procedure comprises:

18. The traffic processing method according to claim 15, further comprising:

19. The traffic processing method according to claim 15, further comprising:

20. A service processing method for a mobility management entity, comprising:

receiving a call request sent by a mobile switching center and sending the call request to a terminal, an

judging whether the mobile management entity supports the completion of the voice call establishment process on the first communication network or not according to the identification information in the call response;

receiving parameter information required for performing a voice call setup procedure and circuit resource information of a second communication network required for establishing a voice service corresponding to the call request, which are sent by the mobile switching center when the judgment result is that the mobile switching center supports the completion of the voice call setup procedure on the first communication network, and sending the parameter information to the terminal, receiving an answer response sent by the terminal, and sending the answer response to the mobile switching center,

21. The service processing method according to claim 20, wherein the parameter information includes system information, location update response information, routing area update response information and/or SETUP information of a cell in which the second communication network is located, to which the voice service corresponding to the voice call SETUP procedure is to be performed,

the method further comprises the following steps:

22. The traffic processing method according to claim 21, further comprising:

receiving a rejection response sent by the terminal, and sending the rejection response to the mobile switching center; and

and receiving the call reminding information transmitted by the mobile switching center, and sending the call reminding information to the terminal.

23. A service processing method according to any one of claims 20 to 22, further comprising:

and receiving the voice fallback information sent by the mobile switching center when the mobile switching center sends the system resources, and sending the voice fallback information to the terminal, or receiving the voice fallback information sent by the mobile switching center when the mobile switching center receives the answer response, and sending the voice fallback information to the terminal.

24. A service processing method for a mobile switching center, comprising:

sending a call request to a mobile management entity, and receiving a call response corresponding to the call request sent by the mobile management entity, wherein the call response comprises identification information of whether a voice call establishment procedure can be completed on a first communication network;

judging whether the mobile switching center supports the completion of the voice call establishment process on the first communication network or not according to the identification information in the call response;

when the judgment result is that the mobile switching center supports the completion of the voice call establishment process on the first communication network, circuit resource information of a second communication network required for establishing a voice service is distributed to a target terminal corresponding to the call request;

receiving an answering response sent by the mobile management entity, and sending a voice fallback message to the mobile management entity, so that the mobile management entity sends the voice fallback message to the target terminal, the target terminal disconnects the data service of the first communication network according to the voice fallback message, and establishes the voice service of the second communication network by using the received circuit resource information.

25. The traffic processing method according to claim 24,

the method further comprises the following steps:

sending the system information to the mobility management entity;

26. The traffic processing method according to claim 24 or 25, further comprising:

27. The traffic processing method according to claim 24 or 25, further comprising: